Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1980-05-02
1981-09-15
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568421, C07C 4704
Patent
active
042899125
ABSTRACT:
The tendency of liquid paraformaldehyde containing water and paraformaldehyde in, for example, approximately 80% to approximately 90% concentration to precipitate solid paraformaldehyde therefrom is retarded by the incorporation thereinto of an effective amount of a moderator or stabilizer selected from the group consisting of polyacrylic acid, tartaric acid, dl-malic acid, ethylenediaminetetraacetic acid, and citric acid. The prior-art stabilizers known and used for lower-concentration formaldehyde solutions of, for example, about 50% strength are not effective. Conversely, the present moderators are not effective in the lower-concentration solutions.
REFERENCES:
patent: 2000152 (1935-05-01), Walher
patent: 2492453 (1949-12-01), Yates
patent: 2568016 (1951-09-01), MacLean
patent: 2568017 (1951-09-01), MacLean
patent: 3137736 (1964-06-01), Prinz et al.
patent: 3287414 (1966-11-01), Fukui et al.
patent: 3359326 (1967-12-01), Locke
patent: 3379769 (1968-04-01), Prinz et al.
patent: 3532756 (1970-10-01), Prinz et al.
patent: 3745190 (1973-07-01), Prinz et al.
patent: 3781365 (1973-12-01), Prinz et al.
patent: 3816539 (1974-07-01), Sanborn et al.
Harris, Jr. Marvin E.
Thigpen Hubert H.
Celanese Corporation
Lone Werren B.
Pritchett Ralph M.
LandOfFree
Stabilization of liquid paraformaldehyde does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stabilization of liquid paraformaldehyde, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stabilization of liquid paraformaldehyde will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-391860